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Expired Canadian patentCanada

Butenoic acid derivatives, processes for the preparation thereof, pharmaceutical compositions comprising them, and use for the treatment of dyslipidaemia, atherosclerosis and diabetes

CA 2534493 C · Owner: Zeiller, Jean-Jacques · Inventors: Ferrand, Gerard; Bonhomme, Yves; Dumas, Herve

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

The present invention relates to butenoic acid derivatives of the formula (I) in which R, R1, R2 and R3 are as defined in the description and also to , processes for the preparation thereof to pharmaceutical compositions , comprising them and to their use for the treatment of dyslipidaemia atherosclerosis and diabetes.

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Filed July 14, 2004 and granted August 28, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 14, 2024.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 14, 2026.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 14, 2004
GrantedAugust 28, 2012
Term endedJuly 14, 2024
Patent numberCA 2534493 C
Classification (IPC)C07C69/73 +2 more

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedJuly 14, 2004Patent grantedAug 28, 2012Term endedJuly 14, 2024

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.